Hikaru Shindo, a pretty normal Japanese sixth-grader, finds an old, bloodstained Go board in his grandfather's attic, and soon he discovers that Fujiwara-no-Sai, the ghost of an ancient Go master, is trapped inside the board, but when Sai becomes a part of Hikaru's consciousness, together they make an unstoppable Go-playing team.
- Genre: Juvenile Fiction
- Subgenre: Horror + Ghost Stories, Comics + Graphic Novels / Manga
- Age: 9-12 years
- Publisher: Viz
- Language: English
- Format: paperback
- Release Date: January 1, 2008
- Date Published: January 1, 2008
- Author: Yumi Hotta
- Illustrator: Takeshi Obata